Gage-cock.



HARRY N. EVANS, SR., OF PHILADELPHIA, PENNSYLVANIA.

GAGE-COCK.

retrasos.

Application filed September 3, 1912.

Be it known that l, Hanny N. Evaxs, Sr., a citizen ot the United States. residing at Philadelphia` in the county ot` Philadelphia and State ol Pennsylvania, have invented certain new and useful In'un'ovements in Gage-ocks. of which the iliolltnving is a specification.

My invention relates to improvements in gage cocks, the object of the invention being to provide an improved construction ot" cock having a removable valve seat and valve with a turning plug in the passage through the cock between the said valve seat and the boiler.

it further object is to provide an improved construction oit removable valve seat and valve which permits them to be readily removed and repaired without disconnecting the cock from the boiler.

Titti these and other objects in view. the invention consists in certain novel features of construction and combinations and arraiigenients of parts as will be more :fully hereinafter described and pointed outJ in the claims.

In the accompanying drawings: Figure 1 is a view in side elevation illustrating my improvements. Fig. 2 is a top plan View part-ly in section. Fig. 3 is a view partly in. longitudinal section on an enlarged scale through one et the cocks. Fig. 4 is a view in longitudinal section through the removable valve seat, and Fig. 5 is a plan view oit the valve seat and valve.

The upper and lower cocks l.. l. which are connected by a glass tube 2a and form the ordinary tpage, are alike in construction in so tar as my improvements are concerned, and hence the description of one cock will apply alike to both.

The cock l has a longitudinal bore Q which is in direct communication with the boiler and extending across this bore 2 is a conical plug l which is provided with a circular opening 5 normally registering with the bore of the cock te permit a free passage through the same. This plug is held in open position by means of a nut 6 screwed onto one end thereof, and the opposite end ot the plug is made angular as shown at 7 -for the reception ot a wrench to turn the same and close the cock. The cock 1 is provided with a transverse conical opening 8 to receive a conical plug 9. This plug 9 has a screwthreaded stud 10 on one end to receive a nut Specification of Letters Patent.

iaten'ted Mar. M, 1914i.

semi No. 718,214.

ll screwed against the. side ot the cock to firmly hold the plug in place. The plug 9 constitutes a 'valve seat, and to distinguish this plug `from the plug Ll, l .shall hereinafter term the same a valve seat. although it has the additional :Function ol. a valve support. e

The valve seat 9 is provided in one side with a recess l1. which communicates with an opening l2 registering with the bore 2 ot the cock. A shaft ll extends through alined openings in the valve seat and across the rccess ll, and this shalt at its portion which extends across the recess 1], is made angular to fit the angular bore ot a sleeve 14. An arm is provided on the sleeve tt, and is connected with a valve 1G, which is adapted to close against the valve seat when the glass tube 2a breaks. The valve. however. is normally open as shown in l? ig 5l. and an arm 17 is connected to the outer end ot shatt 153, and is adapted to move the valve and control its position. The shaft 153 extends through a small sluiting box 1S to render the same steam tight.

By reference particularly to Fig. 2, it will be seen that the conical plug 4L and the conical valve seat 9 extend in opposite directions. This is done to facilitate the application of a wrench to the plugl t with which the arm 1 7 might interfere it parts were differently positioned.

In normal operation, the valve 1G is open as shown. It the glass tube 2 should break, the pressure back oil the valve would cause it to quickly close and prevent the escape of water and steam from the boiler.

In use, the cocks become fouled and it is necessary to clean them in order to insure perfect working of the parts. By providing a removable valve seat with the plug t so located that it maybe turned to shut ott communication with the boiler, while the valve seat is being removed` l provide a struct-ure which permits a repair and cleaning of the valve` and also oit the seat for the valve. The removable seat therefore enables me to keep the automatic or check valve vfeature of the apparatus in perfect working order without disconnecting the cock from the boiler.

Vhile I have illustrated my improvements in connection with details common to gages of this type, the invention is not limited to such features, but is broadly to the idea of a removable valve seat and valve and cooperative parts.

Various slight changes might be made in the general form and arrangement of parts described without departing from my invention, and hence I do not limit myself to the. precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall wit-hin the spirit and sco-pe of the appended claims.

Having thus described my invent-ion, what I claim as new and desire to secure by Letters Patent is:

l. A gage cock having a transverse conical opening intersecting its longitudinal bore, a conical plug positioned in said opening and having a screw-threaded stud on its smaller end, a nut positioned against the outer face of the cock and screwed onto said stud, said plug having a recess in one side and an opening communicating with the recess and registering with the bore of the cock, a shaft positioned in the plug and extending across the recess, a valve connected to said shaft in the recess and adapted to close the opening in thev plug, and

means on the outer end of said shaft for turning the same, substantially as described.

2. A gage cock having a transverse conical opening intersecting its longitudinal bore, a conical plug positioned in said opening and having a screw-threaded stud on its smaller end, a nut positioned against the outer face of the cock and screwed onto said stud, said plug having a recess in one side and an opening communicating` with the recess and registering with the bore of the cock, a shaft positioned in the plug and extending across the recess, an .arm on said shaft in the recess, a valve fixed to the free end of said arm and adapted to close against the valve seat, and a shaft turning arm on the outer end of said shaft, substantially as described.

In testimony whereof l have signed my name to this specification in the presence of two subscribing witnesses.

HARRY N. EVANS, SR.

litnesses C. R. ZIEGLER, S. 7. FosTER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

